Why Titanium is the most suitable to be an engine material?
Why titanium is the most suitable to be an engine material? First of all, from its characteristics, the high strength of titanium metal is unique in many metal elements, far more than the common aluminum alloy, magnesium alloy, stainless steel and so on. At the same time, it can maintain long-term stable work at a high temperature of 450 ~ 500℃, but also have both good corrosion resistance, good low temperature performance, chemical activity, small thermal conductivity, small elastic modulus and other comprehensive advantages, which can be treated to be the most suitable manufacturing materials for aircraft engines. Technicial data shows that the current global production of titanium alloy materials, three-quarters of which are used in the aerospace industry.
As well as we know, with the continuous transcendence of aviation research and development technology, the latest generation of aircraft, whether it is civil aviation models or military models, the engine requirements are getting higher and higher. In particular, one of the most critical performance--thrust to weight ratio, has become a standard indicator of the performance of an advanced aircraft. From the early jet era generally only 2-3 thrust-to-weight ratio, to today's supersonic era reached more than 10 thrust-to-weight ratio level, it is thanks to the continuous upgrading of modern aircraft engines in the material. From the point of view of aviation theory, in order to improve the thrust-to-weight ratio of the engine, reduce its weight, now is the most critical way. Since the density of titanium is only about 40% of steel, but has the same strength, its melting point of up to 1668℃ is also the most suitable for the manufacture of aircraft engines high temperature metal materials.
